Ayatollah Ali Khamenei said Iran had already dealt the U.S. a "highly sensitive and strategic blow" last month.

Iran's president enacted a law passed by the country's parliament that severs ties with the International Atomic Energy Agency, a U.N. watchdog, following Tehran's recent conflict with the U.S ...

Iran's foreign minister warned President Trump to stop disrespecting Supreme Leader Khamenei, threatening to unveil Iran's "real capabilities" while boasting about the recent conflict with Israel.

Iran’s Khamenei resurfaces to warn against future US attacks in first statement since ceasefire Iran’s Supreme Leader says his country has 'delivered a hand slap to America’s face' with its ...

After Sunday’s attack on Iran’s nuclear facilities, Trump was able to help negotiate a ceasefire that came into effect Tuesday. Iranian leader warns US against further attacks ...

Israel's military has been ordered to respond forcefully after it said Iran had violated the latest ceasefire, but Iran denies it has launched any new missles.

What we know CEASEFIRE ANNOUNCED: Hours after Iran targeted a U.S. military base in Qatar, President Donald Trump said on social media that Iran and Israel had agreed to a total ceasefire.

The president insists Iran’s nuclear facilities were “totally obliterated.” Not everyone is so sure.

Why Iran’s Nuclear Program Is So Essential to Its Identity Its long, complicated relationship with the United States has a lot to do with it.

President Donald Trump’s nominee to lead U.S. Central Command said Iran still has 'considerable tactical capabilities' of concern to national security.

The United States struck three nuclear sites in Iran on Saturday, President Donald Trump announced. B-2 bombers dropped a ...

Follow NBC News after Trump announced the U.S. has struck three nuclear facilities in Iran, joining the conflict that began when Israel struck Iran..